1.Support high-capacity Micro TF card2.Automotive turning on and recording function when the vehicle start3.GPS scanning and positioning4.Gravity induced SENSOR5.Built-in microphone / speaker6.Built-in lithium battery with charging and meanwhile recording function7.Sound recorded simultaneously by built-in Microphone and speaker8.Loop video recording, deleting old files and then recording new ones automatically.9.Two methods for battery charging: a. using USB line to connect the machine with the computer for charging; b. using accessory vehicle-mounted power for chargingPackage Contents: